#  异常处理
try:
    s = input("please enter two numbers separated by comma:")
    num1 = int(s.split(',')[0].strip())
    num2 = int(s.split(',')[1].strip())
    print("result:{}".format(num1 + num2))
except ValueError as err:
    print("Value error:{}".format(err))
print("continue")
